Ophthalmic mounting



.Feb. 6, 1934. J, N NELSON 1,945,617

OPHTHALMI C MOUNTING Filed Feb. 24, 1931 IIJIl/Il/ll IN VEN TOR.

A TTORNEYS.

Patented Feb. 6, 1934 OPHTHALIVHC MOUNTING John N. Nelson, Cranston, R. I., assignor to Universal Optical Corporation, a corporation of Rhode Island Application February 24, 1931. Serial No. 517,770

4 Claims.

This invention relates to an improved construction of ophthalmic mounting, and has for one of its objects to provide a very strong and durable yet flexible rimles-s type of ophthalmic mounting.

Another object of the invention is to provide a bridge member which will flex in a horizontal plane only due to the inherent resiliency of its stock.

A further object is to provide an improved means of securing the nose-guard arm and the bridge ends to the lens holders.

A still further object of the invention is to provide a reinforcing attaching block to which the nose-guard arm is firmly connected and which is securely connected to the lens holder by extending the end of the bridge wire thru the block and the lens holder, and upsetting its end to rivet the whole together in assembled relation.

With these and other objects in View, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawing:

Fig. l is a front view showing one form of my improved ophthalmic mounting;

Fig. 2 is an edge view showing the block at each end of the bridge as secured to the lens holder;

Fig. 3 is a perspective View of the bridge which is preferably formed of resilient material and showing its out-turned ends arranged for riveting the block to the lens holder.

Fig. 4 is an edge view partly in section showing one end of the bridge as extending thru the block and riveted on the inner surface of the lens strap or holder to firmly bind the whole together.

Fig. 5 is a view looking at the edge of one of the lenses, and showing one end of the bridge as looped rearwardly and then extending downwardly in line with the lens and outwardly thru the block, the strap and the nose-guard arm being secured to the block.

Fig. 6 is a sectional edge view showing the nose guard arm as secured to a recess in the edge of the block and the block in position against the lens holder.

Fig. '7 shows the nose-guard arm detached.

Fig. 8 is a perspective view of the block being notched on its edge to receive the end of the noseguard arm to be soldered therein.

Fig. 9 is an edge view of a portion of the lens with the block in position on the lens holder and the notch in the block to receive the end of the nose-guard arm.

Fig. 10 is a perspective view of the lens holder showing the hole therein thru which the end of the bridge is passed and riveted.

In the practical construction of the flexible rimless type of ophthalmic mounting, it is found of advantage, in some instances, to form the same very flexible, and in which case the resilient bridge which permits of such flexibility is positioned to flex in a horizontal plane only and must be very firmly secured to the lens holding members. To accomplish this in a simple and effective way, I have provided a reinforcing block member shaped to set aginst the fit the face of the lens strapand be secured thereto by extending the end of the bridge thru the block and the strap and riveting over its end on the inner face of the strap to secure all of the parts in assembled relation. This block also provides a convenient and secure means for attaching the guard arm to the strap and it may be provided with a locating notch in which the strap end may be securely fastened .75 by rivets, solder or other convenient means. This construction is found to be very strong and durable and also facilitates the assembly of these parts; and the following is a detailed description of the present embodiment of my invention, showing one arrangement of the mounting parts by which these advantageous results may be accomp1ished:

With reference to the drawing, 10 designates the lenses which are herein shown as being mounted in the lens engaging or holding members 11, arranged in spaced relation and connected together thru a bridge 12. This particular form of bridge is preferably constructed of resilient material so dimensioned and positioned as to cause 90 the nose guards to flex in a horizontal plane only and lightly grip the nose of the wearer, to better support the mounting in position thereon, and this resilient bridge also serves to render the mounting very flexible. The bridge is flat at its 5 center to permit horizontal flexing and then merges into round stiffened end portions shown as each extending rearwardly as at 13, and then back upon themselves forming loops with their ends 14 turned outwardly and being shouldered as at 15 for the purpose presently described.

The lens holder 11 is formed in the usual way with a strap portion 16 and the ears 1'? between which the lens is clamped by a screw 18.

In order to facilitate the attaching of the bridge to the lens holder and also the nose-guard arm 19 to this lens holder, I have provided a separate strengthening block 20 which has a longitudinally grooved inner face 21 adapted to fit against the oval face of. the strap portion 16, which block is- 110 notched as at 22 in one edge to receive the beveled end 23 of the guard arm 19 so as to determine the exact position that this arm shall be soldered or otherwise attached; also this block is provided with a hole 24 thru which the end portion 14 of the bridge extends and the strap 16 is also provided with a hole 25 which may register with the hole 24 in the block and thru both of with holes the end 14 of the bridge is passed to be riveted as at 26 in a counterbore on the inner face of the strap. By which construction the block is firmly held in position on the strap and may later be further secured in this position by soldering, if desired, the groove 21 in the block serving to prevent any possibility of its swinging or rotating on its rivet when secured in place by the binding effect of this single rivet.

The nose guard 27 herein shown is preferably formed of shell or other non-metallic material, the outer end of which nose-guard arm being provided with a bar 28 which is adapted to be riveted to this shell guard.

It is found of advantage in the use of a flexible mounting of this character where the lenses are connected at their inner edges thru lens-holding straps to a flexible bridge to have temples 29 at their outer edges, and that the attaching means employed for connecting the bridge to these lensholding members must be very strong and durable to withstand the frequent flexing of the resilient bridge.

The foregoing description is directed solely towards the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible, the invention being defined and limited only by the terms of the appended claims.

I claim:

1. In an ophthalmic mounting, a pair of spaced lens holders, each having a part engaging the inner edge of the lens, a reinforcing block member grooved on its inner face to fit and be mounted on each of said lens holders, a guard arm attached to the outer face of said block, and a bridge having one of its ends extending thru each of said blocks and lens holders to rivet the whole in assembled relation, each block being of a size greater than the end of said guard arm or said bridge to reinforce the connection at the point of assembly.

2. In an ophthalmic mounting, a pair of lens holders, each having a part engaging the inner edge of the lens, block members each grooved on its inner face to fit against said lens holders, a nose guard arm attached to the outer surface of each block, and a bridge member having shouldered outturned end portions extending thru said blocks and lens engaging portions with their shoulders engaging the outer surface of the block to rivet and bind the whole assembly together, each block being of a size greater than the end of said guard arm or said bridge to reinforce the connection at the point of assembly.

3. An ophthalmic mounting comprising a pair of lens holders ablock grooved on its inner surface secured to each of said lens holders, a bridge having its opposite end portions forming arms extending rearwardly and then reversely bent and extending forwardly providing second arms in the same vertical plane with the first said arms, the end of each forwardly extending arm being bent outwardly at right angles and extending thru one of said blocks and one of said lens holders, whereby said lens holders are securely attached and manipulation for adjustment by bending the arms relative to each other may be had without rupture of the attachment.

4. An ophthalmic mounting comprising a pair of lens holders, a block secured to each of said lens holders, 2, bridge having its opposite end portions forming arms extending rearwardly and then reversely bent and extending forwardly providing second arms in the same vertical plane with the first said arms, the end of each forwardly extending arm being bent outwardly at right angles and extending thru one of said blocks and lens holders each block being grooved on its inner surface and of a size greater than the cross-section of said bridge at the point of attachment whereby said lens holders and blocks are securely attached and manipulation for adjustment by bending the arms relative to each other may be had without rupture of the attachment.

JOHN N. NELSON. 

